The first option,
both have to be negative, because they were originally both part of the one fraction, which was all negative.
Answer:
A
Step-by-step explanation:
The domain is the span of x-values a graph covers.
From the graph, we can see that the graph only covers the x-values less than or equal to 0. Our x-values never cross and go beyond x=0.
Therefore, our domain is all values less than or equal to 0.
As an inequality, this is:

So, our answer is A.
And we're done!
Answer:
Step-by-step explanation:
Definition: A letter that is placed in an unknown number place.
Example: 8+B+9
The variable would be B.
Solution: It would be quadrupled because radius controls to axis (height & width) meaning if you double two (2 x 2) you get four (4).